FPC and BMS connection structure, signal acquisition assembly, battery pack and vehicle

Abstract

This utility model discloses an FPC and BMS connection structure, a signal acquisition assembly, a battery pack, and a vehicle, relating to the field of battery manufacturing technology. The FPC and BMS connection structure includes an FPC, a battery management circuit board, a first pin header, and an adapter plate. The FPC includes a flexible body and a bent portion. The flexible body is fixedly connected to the bent portion, and the bent portion and the adapter plate are opposite to and spaced apart. The first pin header is fixedly connected between the bent portion and the adapter plate. The adapter plate is disposed on one side of the battery management circuit board and is fixedly connected to the battery management circuit board. The FPC is electrically connected to the battery management circuit board through the first pin header and the adapter plate. The FPC mounting structure of this utility model is simple, low-cost, and occupies little space.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to an FPC and BMS connection structure, a signal acquisition assembly, a battery pack, and a vehicle. Background Technology

[0002] The battery management circuit board of a BMS (Battery Management System) includes a BMU (Battery Management Unit) module and a CMU (Cell Monitoring Unit) module. The CMU module, also known as the sub-board battery state management controller, primarily collects the voltage of individual battery cells and NTC (Negative Temperature Coefficient Thermistor) resistors used to monitor the battery pack temperature. The BMU module is also called the mainboard battery state management controller assembly. There is only one BMU module, while multiple CMU modules are often present because they need to collect the status of multiple cells and battery modules. These multiple CMU modules transmit the signals collected by the FPC (Factory Circuit Board) to the BMU module via wiring harnesses, and then the BMU module manages the battery system.

[0003] The CCS (Cells Contact System) assembly, also known as the wire harness board integrated system, consists of signal acquisition components FPC (Flexible Printed Circuit) and conductive busbars (aluminum palladium) and other plastic structural parts, as well as copper and aluminum busbars. This allows the battery cells and BMS to form a sampling loop, providing important data to the BMS.

[0004] Because different manufacturers arrange battery pack modules in different sequences, individual cells connected to a single FPC often end up in different CMU modules. However, end users and OEMs often need to arrange the cell data sequentially when analyzing data. This necessitates adjusting the connection order using wiring harnesses and connecting the cells to connectors according to the CMU module's interface definitions. Furthermore, due to the different cell arrangement orders and varying locations of the thermal safety NTC, the FPC cannot arbitrarily change the wiring positions like a wiring harness, requiring another mapping and conversion between the FPC and the BMS.

[0005] With the rapid development of new energy vehicles and the maturation of power battery technology, OEMs are all moving towards larger capacity, higher integration, and lower cost. The energy of a power battery pack is closely related to the energy density and number of cells. As the number of cells gradually increases, the number of wiring harnesses and connectors, as well as the length of wiring harnesses and FPCs, also increase, leading to a significant increase in the cost of power batteries and difficulties in arranging other components within the pack, such as the high-voltage box and battery management controller.

[0006] like Figure 1 As shown, one existing connection method between FPC and BMS is through a wire harness adapter structure 1. For FPC connections of different cell modules, the wire harness adapter structure 1 requires switching the order within the pack. The wire harness string spans the entire pack structure, and signals of different voltage ranges and rates are bound together in parallel. On the one hand, it has disadvantages such as a large number of wire harnesses, high cost, and difficulty in assembly due to the narrow space inside the battery pack. On the other hand, since the CMU module module of the battery management circuit board of the BMS in this solution uses 3-4 AFE cores to form a large module for data acquisition, the integration of the CMU module is improved. However, if multiple FPCs are connected to a BMS at the same time, different cells will be connected to the BMS at the same time. The voltage pulse generated inside the BMS can reach a maximum pulse voltage of 400V, resulting in a high risk of BMS burn-out.

[0007] like Figure 2 As shown, another existing method for connecting FPC and BMS involves extending and bending the FPC before connecting it to the BMS via connector 2. While FPCs, due to their high ductility, can be folded and connected at the designed angle, the resulting panelization rate is low. Furthermore, the voltage acquisition channels for the battery cells and BMS units require separate jumpers for adjustment, making it less costly than the aforementioned harness adapter solution. It also presents the problem of high voltage pulses and a high risk of BMS burn-out due to different battery cells being connected simultaneously.

[0008] Therefore, there is a need to provide an FPC-BMS connection structure to reduce the switching states of wiring harnesses and connectors, thereby saving battery pack costs and optimizing internal space layout. Utility Model Content

[0009] In view of this, the purpose of this utility model is to provide an FPC and BMS connection structure, a signal acquisition assembly, a battery pack, and a vehicle. The FPC uses a first row of pins to connect with a counterpart (the counterpart is an adapter board or BMS), which makes the structure of the FPC mounting point simple, low in cost, and occupies little space.

[0010] This utility model discloses an FPC and BMS connection structure, including an FPC, a battery management circuit board, a first pin header, and an adapter plate. The FPC includes a flexible body and a bent portion. The flexible body is fixedly connected to the bent portion. The bent portion and the adapter plate are opposite to each other and spaced apart. The first pin header is fixedly connected between the bent portion and the adapter plate. The adapter plate is disposed on one side of the battery management circuit board and is fixedly connected to the battery management circuit board. The FPC is electrically connected to the battery management circuit board through the first pin header and the adapter plate.

[0011] Furthermore, the bending portion has a first welding hole, and a portion of the first row of pins is disposed in the first welding hole; the length of the flexible body is along a first direction, and the bending portion is perpendicular to the first direction; the FPC and BMS connection structure further includes a reinforcing plate, which is disposed between the adapter plate and the bending portion.

[0012] Furthermore, it also includes a connector, one end of which is fixedly connected to the adapter board, and the other end of which is fixedly connected to the battery management circuit board. The adapter board is electrically connected to the battery management circuit board through the connector. Another different technical solution includes a second pin header, where the first pin header is fixedly connected between the adapter board and the battery management circuit board, and the adapter board is electrically connected to the battery management circuit board through the second pin header.

[0013] Furthermore, the battery management circuit board includes a BMU module and a CMU module; the BMU module is electrically connected to the CMU module; the FPC is electrically connected to the CMU module through the first header pins and the adapter board.

[0014] The present invention discloses an FPC and BMS connection structure, comprising an FPC, a battery management circuit board, and a first pin header. The FPC includes a flexible body and a bent portion. The flexible body is fixedly connected to the bent portion. The bent portion is opposite to and spaced apart from the battery management circuit board. The first pin header is fixedly connected between the bent portion and the battery management circuit board. The FPC is electrically connected to the battery management circuit board through the first pin header.

[0015] Furthermore, the bent portion has a first welding hole, and a portion of the first row of pins is disposed in the first welding hole; the length of the flexible body is along a first direction, and the bent portion is perpendicular to the first direction; The battery management circuit board includes a BMU module and a CMU module; the CMU module is electrically connected to the BMU module; the FPC is connected to the CMU module through the first pin header.

[0016] The present invention provides a signal acquisition assembly comprising M buses and the aforementioned FPC and BMS connection structure; the number of CMU modules and FPCs is N, with each of the N CMU modules corresponding to one of the N FPCs, and each of the N CMU modules connected to the BMU module; each of the FPCs is connected to one of the M buses, wherein N≥1 and M≥1.

[0017] A battery pack according to this utility model is characterized in that it includes a battery casing, multiple battery cells, and the aforementioned signal acquisition assembly. The multiple battery cells are all disposed within the battery casing, and the signal acquisition assembly is disposed within the battery casing. The signal acquisition assembly is connected to the tabs of the multiple battery cells through the busbar.

[0018] A vehicle according to the present invention includes a vehicle body and the aforementioned battery pack, wherein the battery pack is connected to the vehicle body.

[0019] The beneficial effects of this utility model are: (1) The FPC of this utility model uses the first row of pins to connect with the counterpart (the counterpart is an adapter board or a battery management circuit board), which makes the structure of the FPC installation point simple, low cost and small space occupation.

[0020] (2) The FPC and BMS of this utility model are connected together through the first row of pins and the adapter board. The adapter board and the CMU module of the battery management circuit board of the BMS are connected by a board-to-board connector, so that the FPC and the battery management circuit board are no longer strongly bound. The structure is simple, the cost is low, and the space occupied at the connection point is reduced. After the FPC, the first row of pins and the adapter board are welded, they can be assembled in the battery pack assembly stage of the battery pack factory.

[0021] (3) In this invention, the FPC and BMS are connected together via a first pin header and an adapter board, and then connected to the CMU module of the BMS's battery management circuit board via a second pin header. Compared to connectors, the second pin header has a simpler connection structure, further reduces costs, and minimizes the space occupied at the connection point between the adapter board and the battery management circuit board. Furthermore, the FPC, adapter board, and CMU module can be electrically connected in pairs via pin header wave soldering before entering the battery pack factory, and the soldered components can be assembled into the battery pack during the final assembly stage at the battery pack factory.

[0022] (4) The FPC and BMS of this utility model are directly connected through the first row of pins, eliminating the need for an adapter board, further reducing costs and space occupied at the connection point. Furthermore, the FPC and CMU module can be electrically connected by wave soldering of the pins before entering the battery pack factory, and the soldered components can be assembled into the battery pack during the overall packaging and assembly process in the battery pack factory.

[0023] (5) The FPC and the CMU module of the battery management circuit board of the BMS form a one-to-one correspondence in the vertical direction. One FPC corresponds to one CMU module. There is no need for cross wiring between multiple FPCs. The internal space of the power battery pack is optimized. There are only low-voltage wiring of CMU module and BDU in the battery pack. The voltage range is consistent and there is no high-speed signal coupling. The battery compatibility is improved. The theoretical maximum voltage is only 10-20V, which is within the voltage withstand range of CMU module of battery management circuit board of BMS. There is no risk of burning. Attached Figure Description

[0024] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 A schematic diagram of the existing FPC and BMS connected via a wire harness adapter structure; Figure 2 A schematic diagram of the structure of an existing FPC that has been extended and bent and connected to a BMS via a connector; Figure 3 This is a schematic diagram of the connection structure between the FPC and BMS in Embodiment 1; Figure 4 This is a schematic diagram of the connection structure between the FPC and BMS in Embodiment 2; Figure 5 This is a schematic diagram of the connection structure between the FPC and BMS in Embodiment 3; Figure 6 This is a schematic diagram of the signal acquisition assembly in Example 4; Figure 7 This is a diagram of the signal acquisition assembly in Example 4; Figure 8 This is a schematic diagram of the battery pack structure in Example 5; Figure 9 This is a structural schematic diagram of the vehicle in Example 5.

[0025] The following labels are used in the attached diagram: 1-Wire harness adapter structure, 2-Plug connector, 3-FPC, 301-Bending part, 302-First solder hole, 303-Flexible body, 4-Battery management circuit board, 401-BMU module, 402-CMU module, 5-First pin row, 6-Adapter board, 601-Reinforcing plate, 7-Second pin row, 8-Connector, 9-Battery housing, 10-Battery cell, 11-Busbar, 12-Front reinforcing beam, 13-Vehicle body. Detailed Implementation

[0026] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1: like Figure 3 and Figure 6 As shown, an FPC-BMS connection structure in this embodiment includes an FPC3, a battery management circuit board 4, a first pin header 5, an adapter plate 6, and a connector 8. The FPC3 includes a flexible body 303 and a bending portion 301. The flexible body 303 is fixedly connected to the bending portion 301. The bending portion 301 is opposite to and spaced apart from the adapter plate 6. The first pin header 5 is fixedly connected between the bending portion 301 and the adapter plate 6. The adapter plate 6 is disposed on one side of the battery management circuit board 4 and is fixedly connected to the battery management circuit board 4. One end of the connector 8 is fixedly connected to the adapter plate 6, and the other end of the connector 8 is fixedly connected to the battery management circuit board 4. The FPC3 is electrically connected to the adapter plate 6 through the first pin header 5, and the adapter plate 6 is electrically connected to the battery management circuit board 4 through the connector 8.

[0028] Specifically, the battery management circuit board 4 of the BMS includes a BMU module 401 and a CMU module 402; the BMU module 401 is electrically connected to the CMU module 402; the FPC3 is electrically connected to the adapter board 6 through the first pin header 5, and the adapter board 6 is electrically connected to the CMU module 402 through the connector 8.

[0029] The technical solution in this embodiment is as follows: FPC3 is connected to the adapter board 6 through the first pin header 5 and then connected to the CMU module 402 of the battery management circuit board 4 through the connector 8. FPC3 uses the first pin header 5 to connect to the counterpart component, which in this embodiment is the adapter board 6, so that the structure of the FPC3 installation location is simple, the cost is low and the space occupancy is small.

[0030] In this embodiment, the adapter board 6 and the CMU module 402 of the battery management circuit board 4 of the BMS are connected by a board-to-board connector 8, so that the FPC3 and the battery management circuit board 4 are no longer strongly bound together. The structure is simple, the cost is low, and the space occupied at the connection point is reduced. After the FPC3, the first row of pins 5, and the adapter board 6 are soldered, they can be assembled in the battery pack assembly stage at the battery pack factory.

[0031] In this embodiment, the length of the flexible body 303 is along the first direction, and the bending portion 301 is perpendicular to the first direction. This perpendicularity is not limited to a perfect 90° angle; a certain deviation is allowed, for example, the angle can be between 85° and 95°. The adapter plate 6 is parallel to the bending portion 301, therefore the adapter plate 6 is perpendicular to the length direction of the flexible body. The flexible body is located above the tabs of the battery cell 10, while the BMU module 401 and CMU module 402 of the battery management circuit board 4 are both located in the electrical component receiving cavity between the front reinforcing beam 12 and the inner wall of the battery casing 9.

[0032] In this embodiment, the bent portion 301 has a first solder hole 302, and a portion of the first pin header 5 is disposed within the first solder hole 302. The adapter board 6 is provided with the aforementioned first pin header 5. Each pin of the first pin header 5 is inserted into the first solder hole 302 and then connected by pin header wave soldering, thereby realizing the electrical connection between the FPC3 and the adapter board 6 through the first pin header 5.

[0033] In this embodiment, the FPC-BMS connection structure further includes a reinforcing plate 601, which is disposed between the adapter plate 6 and the bending portion 301. The reinforcing plate 601 can protect the first row of pins 5 and prevent the pins from deforming and failing.

[0034] Voltage signals and other cell status signals from battery cell 10 are collected at FPC3 via bus 11. FPC3 transmits the signals to adapter board 6, then to CMU module 402, and finally to BMU module 401 via wiring harness. BMU module 401 manages the battery system. The mapping of the individual acquisition channels of cell 10 and CMU module 402 on the battery management circuit board 4 of BMS is completed on adapter board 6. The status of CMU module 402 is standardized, reducing the number of statuses to one. Furthermore, if new power battery assemblies with different capacities or envelopes are developed later, this can be directly reused without the need for new development. Currently, most battery management circuit boards 4 on the market use 3-4 AFE cores to form a large module for acquisition, improving the integration of CMU module 402. In this embodiment, the CMU module 402 of the battery management circuit board 4 uses 1-2 AFE chips to form a small acquisition module for acquisition. The CMU module 402 of the battery management circuit board 4 can be flexibly matched according to the number of cells 10 on a single FPC3 to improve acquisition efficiency and reduce unnecessary redundant channels. It is compatible with different capacities, different numbers of cells 10, and different arrangements of medium and high voltage power battery packs. A single BMS battery management circuit board 4 platform is compatible with multiple battery packs.

[0035] In this embodiment, the FPC3 and the CMU module 402 of the battery management circuit board 4 form a one-to-one correspondence in the vertical direction. One FPC3 corresponds to one CMU module 402, eliminating the need for cross wiring between multiple FPC3s. The internal space of the power battery pack is optimized. Only the low-voltage wiring of the CMU module 402 and the BDU (battery distribution unit) exists in the battery pack, maintaining a consistent voltage range and eliminating high-speed signal coupling. This improves battery compatibility. Furthermore, the theoretical maximum voltage is only 10-20V, which is within the voltage withstand range of the CMU module 402 of the battery management circuit board 4 of the BMS, eliminating the risk of burn-out.

[0036] In this embodiment, the adapter board 6 is made of FR-4 rigid PCB board, which is significantly cheaper than FPC3 with its extension, bending and wire harness crossing, thus saving a lot of costs and making it highly practical.

[0037] Example 2: like Figure 4 and Figure 6 As shown, this embodiment of an FPC-BMS connection structure includes an FPC3, a battery management circuit board 4, a first pin header 5, an adapter plate 6, and a second pin header 7. The FPC3 includes a flexible body 303 and a bending portion 301. The flexible body 303 is fixedly connected to the bending portion 301. The bending portion 301 is opposite to and spaced apart from the adapter plate 6. The first pin header 5 is fixedly connected between the bending portion 301 and the adapter plate 6. The adapter plate 6 is disposed on one side of the battery management circuit board 4 and is fixedly connected to the battery management circuit board 4. The first pin header 5 is fixedly connected between the adapter plate 6 and the battery management circuit board 4. The adapter plate 6 is electrically connected to the battery management circuit board 4 via the second pin header 7. The FPC3 is electrically connected to the adapter plate 6 via the first pin header 5, and the adapter plate 6 is electrically connected to the battery management circuit board 4 via the second pin header 7.

[0038] Specifically, the battery management circuit board 4 of the BMS includes a BMU module 401 and a CMU module 402; the BMU module 401 is electrically connected to the CMU module 402; the FPC3 is electrically connected to the adapter board 6 through the first pin header 5, and the adapter board 6 is electrically connected to the CMU module 402 through the second pin header 7.

[0039] The technical solution in this embodiment is as follows: the FPC3 is connected to the adapter board 6 via the first pin header 5, and then connected to the CMU module 402 of the battery management circuit board 4 of the BMS via the second pin header 7. The FPC3 uses the first pin header 5 to connect with the counterpart (the counterpart in this embodiment is the adapter board 6), which makes the structure of the FPC3 mounting point simple, low-cost, and space-saving.

[0040] In this embodiment, the electrical connection between the adapter board 6 and the CMU module 402 of the battery management circuit board 4 via connector 8 in Embodiment 1 is modified to an electrical connection between the adapter board 6 and the battery management circuit board 4 via a second pin header 7. Compared to connector 8, the second pin header 7 has a simpler connection structure, further reduces cost, and minimizes the space occupied at the connection point between the adapter board 6 and the battery management circuit board 4. Furthermore, the FPC 3, adapter board 6, and CMU module 402 can be electrically connected in pairs via pin header wave soldering before entering the battery pack factory. The soldered components can then be assembled into the battery pack during the final assembly stage at the battery pack factory.

[0041] Example 3: like Figure 5 and Figure 6 As shown, an FPC-BMS connection structure in this embodiment includes an FPC3, a battery management circuit board 4, and a first pin header 5. The FPC3 includes a flexible body 303 and a bending portion 301. The flexible body 303 is fixedly connected to the bending portion 301. The bending portion 301 is opposite to and spaced apart from the battery management circuit board 4. The first pin header 5 is fixedly connected between the bending portion 301 and the battery management circuit board 4. The FPC3 is electrically connected to the battery management circuit board 4 through the first pin header 5.

[0042] The technical solution in this embodiment is as follows: the FPC3 is directly connected to the CMU module 402 of the battery management circuit board 4 of the BMS via the first header pin 5. The FPC3 uses the first header pin 5 to connect with the counterpart (the counterpart in this embodiment is the CMU module 402 of the battery management circuit board 4), which makes the structure of the FPC3 mounting point simple, low in cost, and small in space occupation.

[0043] Furthermore, the FPC3 and the CMU module 402 of the battery management circuit board 4 are directly connected via the first pin header 5, eliminating the need for the adapter board 6 in embodiments one and two, further reducing costs and minimizing space occupied at the connection points. Moreover, the FPC3 and CMU module 402 can be electrically connected via wave soldering of the pin header before entering the battery pack factory, and the soldered components can be assembled into the battery pack during the final assembly stage at the battery pack factory.

[0044] In this embodiment, the bent portion 301 has a first solder hole 302, and a portion of the first pin header 5 is disposed in the first solder hole 302; the CMU module 402 of the battery management circuit board 4 is provided with the aforementioned first pin header 5, and each pin of the first pin header 5 is inserted into the first solder hole 302 and then connected by pin header wave soldering, so as to realize the electrical connection between the FPC3 and the CMU module 402 of the battery management circuit board 4 through the first pin header 5.

[0045] In this embodiment, the length of the flexible body is along a first direction, and the bent portion 301 is perpendicular to the first direction. This perpendicularity is not limited to a perfect 90° angle; a certain deviation is allowed, for example, the angle can be between 85° and 95°. The flexible body is located above the tabs of the battery cell 10, while the BMU module 401 and CMU module 402 of the battery management circuit board 4 are both located in the electrical component receiving cavity between the front reinforcing beam 12 and the inner wall of the battery casing 9.

[0046] Example 4: like Figure 6 and Figure 7 As shown, a signal acquisition assembly in this embodiment includes M buses 11 and any one of the FPC and BMS connection structures in embodiments one, two and three above; the number of CMU modules 402 and FPC3 is N, the N CMU modules 402 correspond one-to-one with the N FPC3, the N CMU modules 402 are all electrically connected to the BMU module 401, and each FPC3 is electrically connected to M buses 11, where N≥1 and M≥1.

[0047] Voltage signals and other cell status signals are collected at FPC3 via bus 11. FPC3 transmits the signals to adapter board 6 via adapter board 6, and then to CMU module 402. Finally, CMU module 402 transmits the signals to BMU module 401 via wiring harness, and BMU module 401 manages the battery system.

[0048] The signal acquisition assembly in this embodiment also includes components such as welded aluminum palladium and plastic structural parts, as used in the prior art. Figure 6 As shown, there are six CMU modules 402 and six FPC3. The exterior of four CMU modules 402 is protected by four first plastic structural members, and the exterior of two CMU modules 402 and one BMU module 401 is protected by one plastic structural member.

[0049] Example 5: like Figure 8 As shown, a battery pack in this embodiment includes a battery housing 9, a plurality of battery cells 10, and the aforementioned signal acquisition assembly. The plurality of battery cells 10 are disposed within the battery housing 9, and the signal acquisition assembly is disposed within the battery housing 9. The signal acquisition assembly is electrically connected to the tabs of the plurality of battery cells 10 through the busbar 11.

[0050] Example 6: like Figure 9 As shown, a vehicle in this embodiment includes a vehicle body 13 and a battery pack as described in Embodiment 5 above, wherein the battery pack is connected to the vehicle body 13.

[0051] The vehicle can be, but is not limited to, a pure electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An FPC and BMS connection structure, characterized in that: The device includes an FPC (3), a battery management circuit board (4), a first pin header (5), and an adapter plate (6). The FPC (3) includes a flexible body (303) and a bending portion (301). The flexible body (303) is fixedly connected to the bending portion (301). The bending portion (301) is opposite to and spaced apart from the adapter plate (6). The first pin header (5) is fixedly connected between the bending portion (301) and the adapter plate (6). The adapter plate (6) is disposed on one side of the battery management circuit board (4) and is fixedly connected to the battery management circuit board (4). The FPC (3) is electrically connected to the battery management circuit board (4) through the first pin header (5) and the adapter plate (6).

2. The FPC and BMS connection structure according to claim 1, characterized in that: The bending portion (301) has a first welding hole (302), and a portion of the first row of pins (5) is disposed in the first welding hole (302); the length of the flexible body is along the first direction, and the bending portion (301) is perpendicular to the first direction; the connection structure between the FPC and the BMS also includes a reinforcing plate (601), which is disposed between the adapter plate (6) and the bending portion (301).

3. The FPC and BMS connection structure according to claim 1, characterized in that: It also includes a connector (8), one end of which is fixedly connected to the adapter plate (6), and the other end of which is fixedly connected to the battery management circuit board (4). The adapter plate (6) is electrically connected to the battery management circuit board (4) through the connector (8).

4. The FPC and BMS connection structure according to claim 1, characterized in that: It also includes a second row of pins (7), and the first row of pins (5) is fixedly connected between the adapter plate (6) and the battery management circuit board (4). The adapter plate (6) is electrically connected to the battery management circuit board (4) through the second row of pins (7).

5. The FPC and BMS connection structure according to any one of claims 1-4, characterized in that: The battery management circuit board (4) includes a BMU module (401) and a CMU module (402); the BMU module (401) is electrically connected to the CMU module (402); the FPC (3) is electrically connected to the CMU module (402) through the first pin header (5) and the adapter board (6).

6. An FPC and BMS connection structure, characterized in that: The device includes an FPC (3), a battery management circuit board (4), and a first pin header (5). The FPC (3) includes a flexible body (303) and a bent portion (301). The flexible body (303) is fixedly connected to the bent portion (301). The bent portion (301) is opposite to and spaced apart from the battery management circuit board (4). The first pin header (5) is fixedly connected between the bent portion (301) and the battery management circuit board (4). The FPC (3) is electrically connected to the battery management circuit board (4) through the first pin header (5).

7. The FPC and BMS connection structure according to claim 6, characterized in that: The bending portion (301) has a first welding hole (302), and a portion of the first row of pins (5) is disposed in the first welding hole (302); the length of the flexible body is along the first direction, and the bending portion (301) is perpendicular to the first direction; The battery management circuit board (4) includes a BMU module (401) and a CMU module (402); the CMU module (402) is electrically connected to the BMU module (401); the FPC (3) is connected to the CMU module (402) through the first pin header (5).

8. A signal acquisition assembly, characterized in that: It includes M busbars (11) and the FPC and BMS connection structure as described in claim 5 or 7; the number of CMU modules (402) and FPCs (3) is N, the N CMU modules (402) correspond one-to-one with the N FPCs (3), the N CMU modules (402) are all connected to the BMU module (401), and each FPC (3) is connected to M busbars (11), where N≥1 and M≥1.

9. A battery pack, characterized in that: The battery includes a battery housing (9), a plurality of battery cells (10), and a signal acquisition assembly as described in claim 8. The plurality of battery cells (10) are disposed within the battery housing (9), and the signal acquisition assembly is disposed within the battery housing (9). The signal acquisition assembly is connected to the tabs of the plurality of battery cells (10) via the busbar (11).

10. A vehicle, characterized in that: It includes a vehicle body (13) and a battery pack as described in claim 9, the battery pack being connected to the vehicle body (13).

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